Fourdrinier machine.



A. J. DAVIES. FOURDRINIER MACHINE. APPLICATION FILED JUNE 26. I916- 1 ,Q31 ,7 l 7., Patented July 3, 1917.

//v l/E/V 7-0/9 AA 5E5 7- J. 04 was ALBERT JOHN DAVIES, OF KELNOGAMI, QUEBEC, CANADA.

FOURIDRINIER MACHINE.

Specification of Letters Patent.

Patented July a, ram.

Application filed .Tune 26, 1916. Serial No. 105,823.

To aZZ whom it may concern:

Be it known that I, ALBERT J. DAVIES, of Kenogami, in the Province of Quebec, a citizen of the United States, and residing at the above place, in the Dominion of Canada, have invented certain new and useful Improvements in Fourdrinier Machines, of which the following is a specification.

This invention relates to machines of the Fourdrinier type and has particular reference to the method of moving the suctionbox, being an improvement upon my Patent No. 1,090,974, issued Mar. 24, 1914, wherein the suction-box movement was not illustrated as individual and where movable side rails were shown.

In the present invention I provide the suctionbox with a vertically oscillating support and add some usual means for imparting motion. Also, there are included several adjustment features which are adapted to render the task of assembling somewhat simpler as well as to fit my box for use under slightly varying conditions.

As pointed out in my previous patent, referred to, the necessary amplitude of motion is small; consequently the ordinate of movement is negligible. With greater amplitude of motion, this ordinate would offer an obstacle to the successful operation of a device where rectilinear movement is practically mandatory, so it is understood that my device is limited to reciprocations of small extent, thus giving practically a rectilinear movement with oscillatory means.

In the drawings which accompany and form part of this specification,

Figure 1 is a cross-elevation of a machine through one of the boxes, broken away in different planes for clearness.

Fig. 2 is a section on line 22 of Fig. 1.

Figs. 3 and 4 are modifications.

Referring to Figs. 1 and 2, the suctionbox 1 is shown as broken in the middle to bring the ends into the illustration.

Fixed side-rails 2 are employed although it is to be understood that any fixed side support will meet the requirements of my invention. Between side-rails 2 is positioned the usual wire apron 3 which contacts with the upper surface of box 1.

Box 1 is suspended by means of two pairs of swinging rods 4, one pair at each end, these rods being journaled on a shaft 5 at each end, supported in brackets 6 which are rigidly secured to side-rails 2. Shafts 5 may be continuous to support adjacent boxes although the drawings show individual mountings complete for each box.

The lower ends of rods 4 are threaded, preferably in two diameters, as shown, and pass through ball-joints 7 in blocks 8, the latter being adjustably secured against the ends of box 1 by screws 9 and slots 10. The ball-joints 7 are given slight clearance, at top and bottom, to allow for the swing of rods 4, and lock-nuts 11 and 12, the former cupped, retain the parts in desired relation. As will be noticed, by the use of lock-nuts 12, the cupped pair 11 may be set carefully to the desired contact with ball-joints 7 and there locked, thus permitting the desired freedom of play, which is very slight. Bods 4 pass through slotted holes in side-rails 2-; and box 1, thus suspended, is capable of being oscillated, through a limited are, somewhat after the fashion of a pendulum. The oscillations may be caused by any wellknown means, that shown being an adjustable eccentric rod 13, journaled, in a usual manner, upon a shaft eccentric 14. (See Fig. 1.)

In the case of inclined side-rails 2, some guiding means is desirable to preserve the transverse alinement of box 1 and I have shown small rolls 15, journaled in blocks 8 and each adapted to bear against a knee 16 which is adjustably secured to side-rail 2 by the screw 17 and slot 18.

By an inspection of Fig. 2, it will be noticed that none of the mountings interfere with the removal of box 1, if repairs are needed; as it is simply necessary to remove the lower lock-nuts 11 and 12 and lower the box on the usual runways 19, which may be located at such a distance below box 1 as to permit blocks 8 to completely release rods 4.

By the adjustment of screw 9 and slot 10, supplemented with that provided in the threaded ends of rods 4, the amplitude of motion of box 1 may be varied. By the use of the latter only, a vertical adjustment of box 1 with respect to apron 3 is obtained, together with a variation in the amplitude of motion of box 1. A second means of ad justing the height of box 1, without varying the amplitude of motion, comprises lugs 20 on blocks 8, plates 21 secured at 22 to box 1 and threaded bolts 23.

By loosening screws 9, this latter adjustment may be made.

The lateral adjustment of box 1 is effected in the eccentric rod 13, although this adjustment is preferably used to keep rods 1 in vertical position through all the other adjustments. 7

In Fig. 3, rods 1 take the place of rods 4, giving a shorter length of pendulum; but I prefer the form shown in Fig. 1, as shafts 5 are therebyraised clear of the wet area adj acent toapron 3.

In Fig. 4, I show another means of attachment wherein the box 1 is supported on spring-plates 30, fastened to the floor by means of castings At 31, a. pivotal connection unites plate 30, block 8 and eccentric rod 13. Plate 30, while stiff and substantial, has suiiicient resiliency to permit the neces sary oscillations of box 1.

Referring toFig. 1, it is noticeable that the rods 4 at the right end of box 1 could be omitted and a simple slide plate substituted; but, for purposes of adjustment, I prefer the form shown.

hat I claim is:

1. I11 a machine of the Fourdrinier type, a suction-box; a vertically oscillating support for said box; and means for imparting limited motion to said box.

2. In a machine of the Four'drinie'r type, a suction-box; a vertical oscillatory support for said box; and adjustable means for imparting limited motions to said box.

' 8. In a machine of the Fourdrinier type, a suction-box; an adjustable vertically oscillating support for said box; and means for imparting limited motions to said box.

4. In a machine of the Fourdrinier type, a suction-box; a vertical oscillatory support for said box; and means for imparting limited motions to said box; in combination with means for guiding said motions.

.5. In a machine of the Fourdrinier type, a suction-box; a vertical oscillatory support for said box; and means for imparting limited motions to said box; in combination with adjustable means for guiding said motions. 7

6. In a machine of the Fourdrinier type, a suction-box; pendulatory means for suspending said box in suitable relation to a wire apron; and said wire apron; in combination with means for causing transverse oscillations of said box through the operation of said pendulatory means.

7. In a machine of the F ourdrinier type, a suction-box; a pendulatory support for said box; and means for operating said support to impart limited transverse oscillations to said box. I

8. In a machine of the F ourdrinier type, a suction-box; a pendi'ilatory support for said box; and mechanism for oscillating said box, transversely of said machine.

9.- In a machine of the Fourdrinier type, a suction-box; a pendulatory support for said box; and meansi'or oscillating said box; in combinationwith means for adjusting said support to vary the amplitude of motion of said box.-

10. In a machine of the Fourdrinier type, a suction-box; means for imparting limited motions to said box; a vertically oscillating support for said box; and adjustable means for attaching said support to said box.

11. In a machine of the Fourdrinier type, a suction-box; means for oscillating said box; and a support for said box comprising a plurality ofswingingrods adapted to control said oscillations; in combination with means-for vertically mounting said rods.

12. In a machine of the Fourdrinier type, a suction-box; a support for said box com prising a plurality of vertically swinging members and a fixed support for said members; and adjustable means for connecting said members with said box; in combination with individual means for causing limited movements, of said box, that are controlled by said members.

13. A suctiomb'ox; a support for said box; means'for movably mounting said support upon fixed members; adjustable means for connecting said box and said support; and individual means for operating said support to impart limited movements to said box.

14. A suction-box; apendulatory support for said box; and means for oscillating said box; in combination with means for guiding said oscillations.

June 10th 1916. I I

ALBERT JOHN DAVIES.

Copies of this patent may be obtained for five cents each; by addressing" the Commissioner of Patents,

Washington, D. G. 

